Performance Comparison of MIMO-STBC Systems with Adaptive Semiblind Channel Estimation Scheme

Kumar, Ravi; Saxena, Rajiv

doi:10.1007/s11277-013-1154-4

Cited by 3 publications

(7 citation statements)

References 37 publications

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“…

where ||·|| F denotes the Frobenius norm of a matrix. X ( k , S ( k )) follows the basis matrices, and is referred to as a time varying OSTBC [ 34 ].…”

Section: System Modelmentioning

confidence: 99%

“…Several approaches have been suggested in the literature to solve this problem, including the transmission of the short training sequence [ 29 , 30 ] or the use of precoders [ 31 – 33 ]. However these semiblind techniques cannot be employed in a noncooperative scenario since they need to modify the transmitter, which has been implemented utilizing the adaptive pilot assisted channel estimation scheme (APACE) proposed by [ 18 ] and by some modification at the precoder and decoder in the proposed scheme, based on which the analysis has been shown in [ 34 ] for the STBC with code rate up to 1. Despite the literature available universally, none of the algorithms is able to estimate the channel matrix for general STBCs without modification of the pilot training symbols and precoding.…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of MIMO-STBC Systems with Higher Coding Rate Using Adaptive Semiblind Channel Estimation Scheme

Kumar

Saxena

2014

The Scientific World Journal

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Semiblind channel estimation method provides the best trade-off in terms of bandwidth overhead, computational complexity and latency. The result after using multiple input multiple output (MIMO) systems shows higher data rate and longer transmit range without any requirement for additional bandwidth or transmit power. This paper presents the detailed analysis of diversity coding techniques using MIMO antenna systems. Different space time block codes (STBCs) schemes have been explored and analyzed with the proposed higher code rate. STBCs with higher code rates have been simulated for different modulation schemes using MATLAB environment and the simulated results have been compared in the semiblind environment which shows the improvement even in highly correlated antenna arrays and is found very close to the condition when channel state information (CSI) is known to the channel.

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“…

where ||·|| F denotes the Frobenius norm of a matrix. X ( k , S ( k )) follows the basis matrices, and is referred to as a time varying OSTBC [ 34 ].…”

Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Analysis of MIMO-STBC Systems with Higher Coding Rate Using Adaptive Semiblind Channel Estimation Scheme

Kumar

Saxena

2014

The Scientific World Journal

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“…It is really cheering that wireless systems have been made use of abundantly throughout the length and breadth of the cosmos to cater to the everrocking needs of the inquisitive human being and the sophisticated machines to exchange communications in between them, regardless of the places in which they are situated [1,2]. Wireless systems generally are home to a transmitter, a radio channel and a receiver and are characterized by the number of their inputs and outputs [3,4].…”

Section: Introductionmentioning

confidence: 99%

BI-Scale Fractional Order Statistics for Blind Channel Estimation in Chaotic STBC Systems

Prabhakar¹

2016

IJIES

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Space-Time Block Coding (STBC) is a MIMO based approach which achieves high reliability and diversity by transmitting multiple copies of data stream across antennas. In this paper, bi-scale based fractional order statistics for blind channel estimation in chaotic STBC systems are proposed. Accordingly, the proposed communication system contains chaotic modulator and transmitter in the transmitter section. Then, the receiver contains the channel equalizer and chaotic demodulator. In the channel equalizer, the signal is transmitted through a channel which is estimated through the proposed channel estimation algorithm. In the proposed channel estimation, the weight updating formulae will be modified based on the comparison of the estimated weighted values and its old weighted value. The analysis of the technique is carried out by finding out the evaluation metrics of BER, MSE and SER with respect to SNR and different antenna array sizeof 4, 5 and 6.

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“…Among the parameters to adapt at the transmitter, the work has been confined to find the optimal algorithm associated with the possible maximal constellation size. To be able to select the optimal algorithm under certain channel conditions, we need to know accurately beforehand the spectral efficiency of the algorithms at different signal to noise ratio (SNR) which has been shown in [10]. Although several theoretical upper bounds [11] of the spectral efficiency have been suggested, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Now the channel coefficients () h  is applied to the available data  abd LS estimate of ()  from the coefficients output is calculated by using (10), where () g  is replaced by (31).…”

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confidence: 99%

Analysis of Adaptive Semiblind Channel Estimation Scheme with Missed Data Channel Estimation Schemes in MIMO Antenna system

Kumar¹,

Saxena²

2012

IJCA

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Multiple Input Multiple Output (MIMO) antenna systems are being given much attention to provide high capacity with less bandwidth requirement. In this paper, some channel estimation techniques have been tried to implement with the adaptive semiblind channel estimation scheme using less requirement of pilot symbols similar to as in the case of the estimating the channel with known channel state information(CSI) conditions with requirement of high channel bandwidth which is not required in this analysis. The improved results have been found with less requirement of channel bandwidth and compared with the already simulated results. It is shown that in addition to improving the spectral efficiency, the proposed technique offer better semiblind channel estimation accuracy for the partial CSI conditions.

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Performance Comparison of MIMO-STBC Systems with Adaptive Semiblind Channel Estimation Scheme

Cited by 3 publications

References 37 publications

Performance Analysis of MIMO-STBC Systems with Higher Coding Rate Using Adaptive Semiblind Channel Estimation Scheme

Performance Analysis of MIMO-STBC Systems with Higher Coding Rate Using Adaptive Semiblind Channel Estimation Scheme

BI-Scale Fractional Order Statistics for Blind Channel Estimation in Chaotic STBC Systems

Analysis of Adaptive Semiblind Channel Estimation Scheme with Missed Data Channel Estimation Schemes in MIMO Antenna system

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